| racemic | <chemistry> Pertaining to, or designating, an acid found in many kinds of grapes. It is also obtained from tartaric acid, with which it is isomeric, and from sugar, gum, etc, by oxidation. It is a sour white crystalline substance, consisting of a combination of dextrorotatory and levorotatory tartaric acids. Origin: Cf. F. Racemique. See Raceme. Source: Websters Dictionary (01 Mar 1998) |
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| racemic mixture | A mixture of equal amounts of the two stereoisomersof an optically active substance. (09 Oct 1997) |